AQSQID: 240018882

Site Name: Horse Rock

Location: Mineral Co, MD

Reporting: True, Located: True

Current AQI: 4.0

Mineral Co MD, US: 39.4452, -79.0691

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 24, 2019, midnight N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A N/A 4.0
 
May 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 25.0 ppb (36) N/A N/A N/A N/A 36.0
 
May 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 11.0 ppb (16) N/A N/A N/A N/A 16.0
 
May 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 84.0 ppb (72) N/A N/A N/A N/A 72.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A N/A 4.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) N/A N/A N/A N/A 9.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
May 20, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 5.0 ppb (7) N/A N/A N/A N/A 7.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 9.0 ppb (13) N/A N/A N/A N/A 13.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A N/A 4.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) N/A N/A N/A N/A 9.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 20.0 ppb (29) N/A N/A N/A N/A 29.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A N/A N/A 4.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 20.0 ppb (29) N/A N/A N/A N/A 29.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 58.0 ppb (60) N/A N/A N/A N/A 60.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 10.0 ppb (14) N/A N/A N/A N/A 14.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) N/A N/A N/A N/A 9.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 32.0 ppb (46) N/A N/A N/A N/A 46.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) N/A N/A N/A N/A 7.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A 45.0 ppb (55) N/A N/A N/A N/A 55.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 15.0 ppb (21) N/A N/A N/A N/A 21.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 26.0 ppb (37) N/A N/A N/A N/A 37.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 11.0 ppb (16) N/A N/A N/A N/A 16.0
 
May 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 22.0 ppb (31) N/A N/A N/A N/A 31.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A 8.0 ppb (11) N/A N/A N/A N/A 11.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A 7.0 ppb (10) N/A N/A N/A N/A 10.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 17, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A 11.0 ppb (16) N/A N/A N/A N/A 16.0
 
May 16, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 16, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 16, 2019, 9 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A N/A N/A 6.0
 
May 16, 2019, 8 a.m. N/A N/A N/A N/A N/A 51.0 ppb (57) N/A N/A N/A N/A 57.0
 
May 16, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 16, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 16, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 16, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 15, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 15, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0